A communication system will be employed after each therapy session, in which video clips of the session demonstrating the participant engaging in an interaction or expression will be presented to care staff. This process will aim to demonstrate to staff how Behavioural and Psychological Symptoms of Dementia (BPSD) are minimised by music therapy techniques, the possible causes of BPSD, and how the therapist has made use of the participants' remaining abilities to enhance and facilitate their involvement and interpersonal communication within sessions.